Ring pricing starts at $145 for a limited time and the rings come in various colors. Ringly offers a referral program. When 10 of your friends buy a Ringly, yours is free.

Once you connect the ring to your smartphone through the Ringly app, you customize your notifications.

Courtesy of Ringly

"You can even customize notifications for certain people — if you wanted, for example, to only have Ringly light up when your significant other is calling, you could do that," Business Insider's Madeline Stone reported earlier this week.

Blinking lights and vibration patterns are adjustable, as well as which apps you want to receive notifications from.